Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects attempts to manipulate process access tokens using the Windows 'SetTokenInformation' API. Specifically, it monitors for adjustments to token privileges or integrity levels, or the presence of 'Untrusted' markers. These behaviors are often indicative of an adversary attempting to bypass Windows access controls, perform token manipulation, or conduct privilege escalation.
Detects the GoCaracal lightweight implant performing process injection by identifying combinations of remote process memory allocation (VirtualAllocRemoteApiCall), memory writing (WriteProcessMemoryRemoteApiCall), and remote thread creation (CreateRemoteThreadApiCall) associated with specific suspicious filenames. It also monitors command-line activity for injection-related flags.
Detects instances where the Windows Remote Management host process (wsmprovhost.exe) is associated with the execution of specific suspicious files (config.toml, cplsupport.exe, or wtass.exe) within a short time window. This activity often indicates post-exploitation behavior or remote execution of secondary tools using WinRM.
Detects periodic execution cycles of ERAAgent.exe that involve memory protection changes, characteristic of the SLEEPWALKER malware's XOR-decrypt-execute-reencrypt loop scheduled by a cron-like mechanism.
Detects ERAAgent.exe (ESET Remote Administrator Agent) interacting with suspicious named pipes (e.g., mojo, spoolss) and attempts to extract credentials from command line parameters, indicating potential credential dumping or lateral movement techniques using the agent process.
This rule detects attempts to perform process injection techniques (such as creating remote threads or opening processes) targeting the 'ctfmon.exe' process, where the initiating process is not 'ctfmon.exe' itself. This behavior is indicative of potential malicious activity such as reflective code loading or the execution of malware like SparkRAT, which may use this legitimate Windows process to mask its activity.
Detects periodic execution cycles of ERAAgent.exe that involve memory protection changes, characteristic of the SLEEPWALKER malware's XOR-decrypt-execute-reencrypt loop scheduled by a cron-like mechanism.
Detects ERAAgent.exe performing suspicious dynamic API resolution for functions commonly used by the SLEEPWALKER malware (VirtualProtect, SetSecurityDescriptorDacl, and CryptGenRandom). By resolving these functions at runtime via GetProcAddress rather than including them in the static import table, the malware attempts to evade detection and analysis.
Detects ERAAgent.exe (ESET Remote Administrator Agent) interacting with suspicious named pipes (e.g., mojo, spoolss) and attempts to extract credentials from command line parameters, indicating potential credential dumping or lateral movement techniques using the agent process.
This rule detects cross-process injection techniques, such as OpenProcess, CreateRemoteThread, and memory modifications, specifically targeting 'svchost.exe' instances that do not appear to be hosting critical Windows services. By filtering out known critical services (e.g., RpcSs, DcomLaunch), the rule flags suspicious attempts to inject code into legitimate service host processes to mask malicious activity.
This rule detects in-memory patching of critical Windows security functions, specifically AmsiScanBuffer (used by AMSI) and EtwEventWrite (used by ETW). It monitors for suspicious API calls such as VirtualProtect, WriteProcessMemory, NtProtectVirtualMemory, or NtWriteVirtualMemory targeting these specific DLLs (amsi.dll and ntdll.dll), which is a common technique used by malware and offensive security tools to blind endpoint security and logging mechanisms.
This rule detects in-memory patching of critical Windows security functions, specifically AmsiScanBuffer (used by AMSI) and EtwEventWrite (used by ETW). It monitors for suspicious API calls such as VirtualProtect, WriteProcessMemory, NtProtectVirtualMemory, or NtWriteVirtualMemory targeting these specific DLLs (amsi.dll and ntdll.dll), which is a common technique used by malware and offensive security tools to blind endpoint security and logging mechanisms.
This rule detects a multi-stage attack chain characteristic of the WordlistLoader/Amatera malware. It identifies the sequential occurrence of module unhooking (via CreateToolhelp32Snapshot), ETW bypass (via AddVectoredExceptionHandler), and remote process injection (via WriteProcessMemory, CreateRemoteThread, etc.) originating from the same process within a 15-minute window.
This rule detects potentially malicious memory manipulation and thread execution activity originating from the ERAAgent.exe process. It specifically identifies when ERAAgent.exe calls VirtualProtect or VirtualAlloc to set memory as PAGE_EXECUTE_READWRITE, followed shortly by a CreateThread or CreateRemoteThread operation. This behavior is indicative of process injection or reflective code loading, where an executable image is manually mapped into memory and executed, bypassing traditional file-based detection.
Detects ERAAgent.exe performing suspicious dynamic API resolution for functions commonly used by the SLEEPWALKER malware (VirtualProtect, SetSecurityDescriptorDacl, and CryptGenRandom). By resolving these functions at runtime via GetProcAddress rather than including them in the static import table, the malware attempts to evade detection and analysis.
Detects instances where a non-SYSTEM process attempts to open a handle to winlogon.exe. Since winlogon.exe typically runs as SYSTEM and manages user sessions, unauthorized access to its process handle is often a precursor to credential dumping or token manipulation attacks aimed at escalating privileges to SYSTEM.
This rule detects attempts to manipulate process access tokens using the Windows 'SetTokenInformation' API. Specifically, it monitors for adjustments to token privileges or integrity levels, or the presence of 'Untrusted' markers. These behaviors are often indicative of an adversary attempting to bypass Windows access controls, perform token manipulation, or conduct privilege escalation.
This rule detects potentially malicious process injection activities (CreateRemoteThreadApiCall, ProcessInjection, OpenProcessApiCall) targeting the Volume Shadow Copy Service process (vssvc.exe). It monitors for interactions originating from processes other than legitimate system processes (svchost.exe, services.exe) or vssadmin.exe, which is commonly associated with Volume Shadow Copy manipulation. Such activity often indicates attempts by malware or attackers to inject code into a critical system process to gain persistence, escalate privileges, or evade detection.
Detects periodic execution cycles of ERAAgent.exe that involve memory protection changes, characteristic of the SLEEPWALKER malware's XOR-decrypt-execute-reencrypt loop scheduled by a cron-like mechanism.
Detects ERAAgent.exe performing suspicious dynamic API resolution for functions commonly used by the SLEEPWALKER malware (VirtualProtect, SetSecurityDescriptorDacl, and CryptGenRandom). By resolving these functions at runtime via GetProcAddress rather than including them in the static import table, the malware attempts to evade detection and analysis.
Detects instances of Chrome or Edge browsers initiating a network connection to the localhost (loopback) while executing commands associated with the Chrome DevTools Protocol, specifically targeting Page.setBypassCSP. This behavior is indicative of an adversary attempting to disable Content Security Policy (CSP) protections, often as part of a browser-based attack or malicious extension activity using remote debugging features.
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